And robert bruce donaldson



(No Model.)

' J. P. STABLE-R.

SUBMERGED WATER HEATER. No. 441,338. Patented Nov. 25, 1890. r

VVi znesses: I lw'venzor:

(5'9 M Gi UNITE STATES ATEN Fries.

JAMES P. STABLER, OF SANDY SPRING, MARYLAND, ASSIGNOR OF PART TO DAVIDMONTGOMERY NESBIT, OF AGRICULTURAL COLLEGE, MARYLAND, AND ROBERT BRUCEDONALDSON, OF XVASHINGTON, DISTRICT OF CO LUM BIA.

SUBMERGED WATER-HEATER.

SPECIFICATION forming part of Letters Patent No. 441,338, dated November25, 1890.

Application filed January 7, 1890.

T0 at 1071,0111 it may concern:

Be it known that 1, JAMES PLEASANTS STA- BLER, of Sandy Spring, in thecounty of Montgomery and State of Maryland, have invented certain newand useful Improvements in Submerged ater-Heaters; and I do herebydeclare the following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itpertains to make and use it, reference beinghad to theaccompanyingdrawings, which form part of this specification.

My invention relates to an improvement in submerged water-heaters; andit consists in a water-heater of the particular form and construction tobe fully described hereinafter.

The object of my invention is to produce a cheap and simple water-heaterin which a burner, constructed as hereinafter described, is used forproducing the heat, and which is specially adapted for heating water inbarrels, tanks, bath-tubs, laundry-tubs, and wherever a water-heater isdesirable.

Figure 1 is a vertical section of a heater which embodies my invention.Fig. 2 is a perspective of the same. Fig. 3 is a plan view. Fig. 4 showsa slight modification in the construction of the flnes which conduct theproducts of combustion.

A represents the fire or heating chamber, of any desired shape, size, orconstruction, but which will preferably be made of cast-iron not onlyfor the purpose of giving the heater a greater amount of durability thanit would have if made of sheet metal, but also to give the heatersufficient weight to cause it to remain in position in the water evenafter the burner has been removed therefrom. Connected to this chamber,either at one side or edge or directly with its top, as is here shown,is a vertical air flue or pipe 13, which is made sufficiently large notonly to allow the passage of a sufficient quantity of air to supplycombustion, but which is made sufliciently large to allow theheating-burner to be freely inserted into or removed from the chamberAthrough it. Extending from the fire-chamber at one side, or directlyfrom its top, as is here shown, is a single flue or pipe 0, which isSerial No. 336,171. (No model.)

formed of corrugated metal, as shown in Fig. 4, or a series of separatefines or pipes D, which are not only separated from each other, but fromthe air-fine B. By separating these pipes from each other a sufficientspace is formed between these pipes or fines to allow the water tocirculate freely between them,

and a much larger heating-surface is formed than if but a single pipe orflue were used. The air flue or pipe B and the fines D will be made ofsufficient length to project a distance above the top of the water whichis to be heated. If used for only heating water in a bath or laundrytub, not as great a length is needed as if water is to be heated inbarrels or deep tanks.

In heating the chamberand the fines D, and through them the water, I usea burner F, so constructed that the flame is radiated therefrom in adirection to impinge directly against the walls of the heating-chamber,and which is connected to the lower end of a vertical pipe G, and whichextends to one side of they lower end of the pipe, as shown. In order togenerate snfficient heat it is necessary to so construct the burner thatthe flame therefrom will impinge directly against the walls of theheating-chamber. If the burner is not so constructed and the flameallowed to extend upward, the products of combustion pass directly upthe flue without thoroughly utilizing the heat of the flame by directapplication to the walls of the chamber and through them to the water,which is in contact with the walls. To this pipe 3' ust above the burneris connected a vaporizing-chamber H of any suitable size, and in which aportion of the gasoline or other fluid used for heating purposes isvaporized. Secured to the upper end of the connecting-pipe is areservoir I of any desired. shape, size, or construction, and into whichthe flnid ispoured. A valve-rod J,

projecting down through the reservoir and the conducting-pipe andprovided with a valve at its lower end, regulates the supply of fluid tothe burner and controls the amount of heat desired.

In inserting the burner into position in the heater it must first beturned so as to extend in a line with the air-flue B, and then after ithas been inserted into the chamber A it is given a partial turn, so asto bring the burner into the position shown in Fig. 1. By thus turningthe burner partially around it is brought directly into the chamber andaway from directly under. the lower end of the air-flue, and thus theair is allowed to flow directly to the burner and supply combustionwithout interfering with it. If this burner were not thus turned theproducts of combustion would rise through the flues B and D alike, andthus prevent a proper supply of air to the burner, and thus cause theburner to be extinguished. The burner must be turned out of line withthe longer axis of the flue B if a proper combustion is to bemaintained. If a reservoiris formed, as shown in Fig. 1, it will extenddirectly across the upper ends of the flues D and be heated to a greateror less extent by the rising products of combustion, and thus preventthe vapor which is generated in the pipe below from becoming condensed.

As this heater has sufficient Weight of its own to prevent it fromfloating, it will remain in position in a barrel, tank, or tubindependently of the weight of the burner and its attachments, andhence, even if the burner is removed at any time, the heater will remainin position. The flames from the burner impart their heat directly tothe walls of the chamber A, and from this chamber the water receives thegreatest amount of heat, and directly at the bottom of the barrel, tank,or tub, and the heated water, rising both from around the chamber andthe flues D, causes an active circulation of the water during the wholeof the time the burner is in operation.

It will be seen that the upper portion of this heater will be made ofany suitable light material and that the parts are few, simple, cheap,and durable, and that there is nothing in the heater itself that islikely to get out of order.

Having thus described my invention, I claim- 1. In a water-heater, thecombination of a heating-chamber, an air-supply inlet-flue, acombustion-outlet flue, and a burner within the heating-chamber havingflame-exits opposite the walls of the heating chamber, whereby the flameimpinges directly against the said walls, substantially as shown anddescribed.

2. In asubmerged water-heater, the combination of a casing having avertical air-inlet flue extending across one side thereof and acombustion-flue at the opposite side thereof, being separated at itsinner side from the inlet-flue and provided at its outer side withspaces for the Water to enter, and the casing having openings for thepassage of water into the space between the inlet and outlet flues andto the water-spaces formed in the outer Side of the combustion-flue, anda heating apparatus, substantially as described.

3. In a submerged heater, the combination of a casing having aheating-chamber at its lower end, an air-inlet flue at one side thereofand extending to the said heatingchamber, and a combustion-outlet flueat the opposite side thereof and extending to the heatingchamber, andone or more water-spaces formed in the outer side of the combustion-flueand having their lower ends above the said heating-chamber, whereby aheating apparatus can be placed under the said water-spaces,substantially as shown and described.

In testimony whereof I affix my signature in presence of two witnesses.

JAMES P. STABLER. Witnesses:

E. P. ELLIS, F. A. LEHMANN.

